Furnace.



No. 739,966. PATENTBD SEPT. 29,1903.

- G. WINsToN.

PURNAGB. l APPLICATION FILED nu 22, 190s. v1ro MODEL.' 2 SHEETS-SHEET z.

UNITED STATES Patented September 29, 1903.

'PATENT OFFICE.

GEORGE wiNs'rON, or CHICAGO, ILLINOis.

FURNACE.

SPECIFICATION forming part of Letters Patent N o. 739,966,dated September 29,1903.

Application iiled May 22,1903. SerialNo. 158,249. (No model.)

To a/ZZ wiz/0711, it may concern,.- f

. Beit known that I, GEORGE W1NsroN,a citizen of the United States of America,and a resident of Chicago, Cook county,-Illinois,have invented a certain new and useful` Improvement in Furnaces, of which the following isa specification.

Prior to my invention blast-furnaces have always been constructed in such manner that the explosions, which are an unavoidable incident to the operation of such furnaces, have resulted very often inthe escape of flying fragments of ore from the top of the furnace and often in a consequent injury to persons and property. My improved furnace is, however, so constructed and designed as to render it impossiblefor fragments of ore or other missiles to escape from the top of the furnace when the explosions occur, the construction being such that while the gases, dust, o., are free to escape,and thereby relieve the sudden pressure7 the escaping fragments of ore or other materials are received by pipes or flues leading from the explosion-doors at the top of the furnace to points near the ground.'

l/Vith this arrangementthe fragments of ore and other debris canv be collected and discharged into cars or other receptacles and there is no danger of injuryto'either persons or property, all as will hereinafter more fully appear. v

In the accompanying drawings, Figure 1 is a side elevation of a furnace constructed in accordance with my invention, the upper portion of the furnace and also one of the flues or chutes for collecting 'the fragments of`ore or debris of the explosions being shown in section. Fig. 2 is a view of another side of the furnace shown in Fig. 1. Fig. 3 is a horizontal cross-section on line 3 3 in Fig. 2. Fig. 4L is an enlarged vdetail sectional view of one of the explosion-doors and adjacent parts.

As thusV illustrated my invention may comprise a furnace-body A of any suitable'kn own or approved character.- rf'he cast-house B and also the dustcatcher C can be of any suitable character. usual practice the top of the furnace can be provided with a hopper D, adapted to receive 5o the ore, and also with a cone-shaped spreader In accordance with thev furnace. Preferably, however, and in order to relieve the pressure occasioned by the explosions, which are usually due to the falling of a mass of incrustation or collected ,ore fromlimmediately below the spreader E, the top or upper portion of the furnace is provided with'swinging explosion-doors F, and each door is inclosed by'a hood Gr, so as to prevent the flying fragments of ore or other missiles from doing harm to persons or near by property. Each hood is preferably provided with an upper relief-pipe g for the escape of gases or dust and also with a lower discharge iiue or pipe g'. As will be observed, each discharge iiue or pipe preferably extends downwardly to a point where it communicates with one of the two ultimate or final dischargeiiues H and H. In other words, the discharge flue or pipel-I is common to the branch pipes or'discharge-lues g', while the flue or pipe H' at the other Vside of the furnace is common to the other three branch pipes or discharge-nues g. These discharge flues or chutes H and H extend downwardly to a point where they may discharge into cars or other receptacles I, andl theirlower ends are preferably provided with valves 7n The said explosion-doors F can be providedwith operating-chains f, which preferably lead to the j lower end of the fluesjor discharge-pipes H and H .and which can be employed for opening and closing these `doors at will.

Vith the foregoing construction it will be seen that when an explosion occurs from any of the well-known causes, such as the falling of a mass of collected ore from the upperportion of the furnace, the explosion-doors will at once open under the pressure, and whata ever fragments of ore or other debris escape through these doors will be caught by the hoods G. The fragments of ore can then dev scend and accumulate at the lower ends of danger of the explosions causing injury to persons or property. Furthermore, the ar- IOS) rangement prevents any loss of ore, whatever ore escapes at the top being collected and retained where it is available for use, if desired.

That I claim as Iny invention is- 1. A furnace constructed at its top with eX- plosion-openings, hoods arranged over said explosion-openings, a dust-catcher suitably connected with the upper portion of said furnace and discharge-filles independent of said dust-catcher and leading downwardly from these hoods to points below.

2. A furnace provided at its top with an explosion-opening, a hood arranged over said opening, a dust-catcher suitably connected with the upper portion of said furnace and a discharge-flue independent of said dustcatcher and leading downwardly from said hood to a point below.

3. A furnace provided at its top with aplurality of explosion-doors, hoods arranged over said explosion-doors, and discharge-fines leading downwardly from said hoods to suitable points below.

4. A blast-furnace having its top provided with a plurality of swinging explosion-doors, hoods arranged over said doors, an outletilue leading upwardly from each hood, and discharge -flues connected with said hoods and leading downwardly to suitable points below.

5. A blast-furnace having its top provided with a swinging explosion-door, a hood arranged over said door, an outlet-due leading upwardly from said hood, and a discharge- Hue connected with said hood and leading downwardly to a suitable point below.

6. A blast-furnace having its top provided with a plurality of explosion-doors, a hood arranged over each said door, the hoods and doors being arranged in a group at each side of the furnace, an outlet-flue rising from each hood, a plurality of discharge-fines each having its upper end connected with a group of said hoods, and a valve device for the lower end of each discharge-fine.

7. A blast-furnace having its top provided with a plurality of explosion-openin gs, hoods arranged over said openings,reliefpipes leading upwardly from said hoods, discharge-dues leading downwardly from said hoods, and a dust-catcher independent of said dischargeiues and suitably connected with the upper portion of said furnace.

8. A blast-furnace having its top provided with a plurality of explosion-doors, suitable connections for operating said doors, hoods arranged over said doors, relief-pipes leading upwardly froin said hoods, dischargelues leading downwardly from said hoods, and a dust-catcher suitably connected with said furnace.

9. A blast-furnace having its top provided with a plurality of explosion-doors, hoods arranged over said doors, means for operating said doors, reliefpipes in said hoods, discharge-fines leading downwardly from said hoods, valve devices for controlling the lower ends of said iiues, and a dust-catcher suitably connected with the upper portion of said furnace.

l0. A blast-furnace having its top portion provided with a plurality of explosion-doors arranged in groups at each side of the furnace, hoods arranged over` said doors, two downwardly-extending discharge-dues, each connected at its upper end with a group of said hoods, relief-pipes connected with said hoods, and a dust-catcher suitably connected with said furnace.

ll. A blast-furnace having its upper portion provided with an explosion-door, and an inelosure arranged over said door and provided with a downwardly-extendin g passage.

Signed by ine at Chicago, Cook county, Illinois, this 2lst day of April, 1903.

GEORGE WINSTON.

Witnesses:

A. J. WINs'roN, W. ll. SULLIVAN. 

